Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual é a data de lançamento da música "had a dad"?
 ###Tabelas: CREATE TABLE national_football_league (national_football_league_id AUTO_INCREMENT PRIMARY KEY, Year VARCHAR, Round INT, Pick INT, Overall INT, Position VARCHAR, NFL team VARCHAR) CREATE TABLE exit_polling (exit_polling_id AUTO_INCREMENT PRIMARY KEY, Classification VARCHAR, % of all VARCHAR, John Kerry VARCHAR, John Edwards VARCHAR, Dennis Kucinich VARCHAR) CREATE TABLE list_of_songs_released_in_2009 (list_of_songs_released_in_2009_id AUTO_INCREMENT PRIMARY KEY, Song title VARCHAR, Artist VARCHAR, Decade VARCHAR, Genre VARCHAR, Single / Pack name VARCHAR, Release date VARCHAR, Family Friendly VARCHAR, Additional Rock Band 3 Features VARCHAR) CREATE TABLE iron_coaches (iron_coaches_id AUTO_INCREMENT PRIMARY KEY, Class to 1928 VARCHAR, Class from 1928 VARCHAR, Seats VARCHAR, Quantity INT, Year(s) of Manufacture VARCHAR, Remarks VARCHAR) CREATE TABLE torneo_clausura (torneo_clausura_id AUTO_INCREMENT PRIMARY KEY, Position INT, Team VARCHAR, Played INT, Wins INT, Draws P.K. Wins / P.K. Losses VARCHAR, Losses INT, Scored INT, Conceded INT, Points INT)  
SELECT Release date FROM list_of_songs_released_in_2009 WHERE Song title = "Had a Dad"